The term "River Rat" commonly refers to a type of rodent known as the nutria, which is often found in wetlands and along riverbanks. These animals are semi-aquatic and are known for their long, thick bodies and webbed feet, which help them swim efficiently. Nutria are herbivores, primarily feeding on aquatic plants, and they can significantly impact their ecosystems by consuming large amounts of vegetation. In a different context, "River Rat" can also describe individuals who enjoy spending time near rivers, often engaging in activities like fishing, boating, or kayaking. This term is sometimes used affectionately to refer to people who have a strong connection to river environments and the recreational opportunities they provide.